Application

Vacuum pumps for seawater deaeration

Before seawater is injected into oil fields, a deaerator column under vacuum removes the dissolved oxygen from it – according to Edwards against corrosion, according to Busch in the deaerator tower. Atlas Copco also names degassing for carbon capture from seawater under harsh offshore conditions. Below you can see how the application works, what vacuum the manufacturers name and which of their series are intended for it – 175 models from 3 manufacturers.

Compare 175 modelsHow it works

  • 175Models
  • 7Series
  • 3Manufacturers
  • below 50 ppbResidual oxygen, two-stage (Edwards)
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Touch the points: each part of the system explains itself.

In short

Seawater deaeration: the key facts

  • Oxygen removalBusch describes O₂ removal in the deaerator tower under vacuum and the removal of dissolved gases from the flood water; DOLPHIN and COBRA are named.
  • Residual oxygenWith a stripping column, liquid ring vacuum pumps and air ejectors, Edwards names below 50 ppb with a two-stage and below 20 ppb with a three-stage design.
  • Corrosion protectionAccording to Edwards, the oxygen is removed from the injection water to prevent corrosion; LR1A, LR1C and LR1D are named.
  • Offshore and CCUSAtlas Copco names AWS and AWD with a booster for CO₂ removal from seawater under harsh offshore conditions, as well as deaerator systems for seawater deaeration for oil field water injection.
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  • Air and gas (vacuum)
  • Exhaust

Operating principle

How it works: Seawater deaeration

The drawing shows the basic principle in section. The systems and pumps of the individual manufacturers differ in detail.

  1. DeaeratingThe seawater passes through the column under vacuum; dissolved gases such as oxygen escape from the water (Busch: O₂ removal in the deaerator tower).
  2. CondensingThe entrained water vapour is condensed in the condenser and collected in the condensate vessel before the gases reach the pump.
  3. ExtractingThe vacuum pump – liquid ring vacuum pumps with air ejectors according to Edwards, AWS and AWD with a booster according to Atlas Copco – draws off the gases; Edwards names below 50 ppb residual oxygen with two stages and below 20 ppb with three.

Vacuum and sizing

Seawater deaeration: how much vacuum is needed

What the manufacturers say about pressure, pumping speed and sizing.

What vacuum

As the result, Edwards names below 50 ppb residual oxygen with a two-stage and below 20 ppb with a three-stage design.

What determines the design

The number of stages (Edwards: two or three), the combination of stripping column, liquid ring vacuum pump and air ejectors (Edwards) or liquid ring vacuum pump with booster (Atlas Copco: AWS, AWD), and the offshore conditions (Atlas Copco).

What the manufacturers point out

Corrosion caused by oxygen in the injection water (Edwards), harsh offshore conditions (Atlas Copco) and the removal of dissolved gases from the flood water (Busch: DOLPHIN, in its product finder also COBRA).

Technology

Seawater deaeration: the vacuum pumps the manufacturers name

Listed are the series the manufacturer itself names for this application. “Show only …” sets the filter of the product overview.

Product overview

Seawater deaeration: all 175 models compared

Use the filters on the left to narrow the selection – by manufacturer, technology and the models’ key figures, for 50 or 60 Hz.

Atlas Copco AWD series 14 models

AWD 110 SPumping speed 106 m³/h 50 Hz128 m³/h 60 HzUltimate pressure 33 mbarRated motor power 3 kW 50 Hz3.7 kW 60 HzVariants 3
AWD 140 SPumping speed 145 m³/h 50 Hz174 m³/h 60 HzUltimate pressure 33 mbarRated motor power 4 kW 50 Hz5.5 kW 60 HzVariants 3
AWD 180 SPumping speed 186 m³/h 50 Hz223 m³/h 60 HzUltimate pressure 33 mbarRated motor power 5.5 kW 50 Hz7.5 kW 60 HzVariants 3
AWD 300 SPumping speed 270 m³/h 50 Hz314 m³/h 60 HzUltimate pressure 33 mbarRated motor power 7.5 kW 50 Hz11 kW 60 HzVariants 3
AWD 350 SPumping speed 342 m³/h 50 Hz411 m³/h 60 HzUltimate pressure 33 mbarRated motor power 11 kW 50 Hz15 kW 60 HzVariants 3
AWD 400 SPumping speed 425 m³/h 50 Hz475 m³/h 60 HzUltimate pressure 33 mbarRated motor power 15 kW 50 Hz18.5 kW 60 HzVariants 3
AWD 500 SPumping speed 501 m³/h 50 Hz590 m³/h 60 HzUltimate pressure 33 mbarRated motor power 18.5 kW 50 Hz22 kW 60 HzVariants 3
AWD 600 SPumping speed 616 m³/h 50 Hz739 m³/h 60 HzUltimate pressure 33 mbarRated motor power 20 kW 50 Hz30 kW 60 HzVariants 3
AWD 800 SPumping speed 862 m³/h 50 Hz1,032 m³/h 60 HzUltimate pressure 33 mbarRated motor power 30 kW 50 Hz37 kW 60 HzVariants 3
AWD 1200 SPumping speed 1,252 m³/h 50 Hz1,407 m³/h 60 HzUltimate pressure 33 mbarRated motor power 37 kW 50 Hz45 kW 60 HzVariants 3
AWD 1600 SPumping speed 1,589 m³/h 50 Hz1,717 m³/h 60 HzUltimate pressure 33 mbarRated motor power 45 kW 50 Hz75 kW 60 HzVariants 3
AWD 1960Pumping speed 2,000 m³/h 50 HzUltimate pressure 33 mbarRated motor power 75 kW 50 HzVariants 3
AWD 3280Pumping speed 3,300 m³/h 50 HzUltimate pressure 33 mbarRated motor power 110 kW 50 HzVariants 3
AWD 4510Pumping speed 4,500 m³/h 50 HzUltimate pressure 33 mbarRated motor power 132 kW 50 HzVariants 3

Atlas Copco AWS series 22 models

AWS 180Pumping speed 168 m³/h 50 Hz202 m³/h 60 HzUltimate pressure 33 mbarRated motor power 5.5 kW 50 Hz7.5 kW 60 HzVariants 6
AWS 280Pumping speed 246 m³/h 50 Hz290 m³/h 60 HzUltimate pressure 33 mbarRated motor power 7.5 kW 50 Hz11 kW 60 HzVariants 6
AWS 360Pumping speed 340 m³/h 50 Hz412 m³/h 60 HzUltimate pressure 33 mbarRated motor power 11 kW 50 Hz15 kW 60 HzVariants 6
AWS 450Pumping speed 450 m³/h 50 Hz535 m³/h 60 HzUltimate pressure 33 mbarRated motor power 15 kW 50 Hz22 kW 60 HzVariants 8
AWS 600Pumping speed 600 m³/h 50 Hz700 m³/h 60 HzUltimate pressure 33 mbarRated motor power 18.5 kW 50 Hz30 kW 60 HzVariants 8
AWS 800Pumping speed 750 m³/h 50 Hz888 m³/h 60 HzUltimate pressure 33 mbarRated motor power 22 kW 50 Hz30 kW 60 HzVariants 8
AWS 1100Pumping speed 1,080 m³/h 50 Hz1,320 m³/h 60 HzUltimate pressure 33 mbarRated motor power 37 kW 50 Hz45 kW 60 HzVariants 8
AWS 1300Pumping speed 1,230 m³/h 50 Hz1,452 m³/h 60 HzUltimate pressure 33 mbarRated motor power 37 kW 50 Hz55 kW 60 HzVariants 8
AWS 1600Pumping speed 1,700 m³/h 50 Hz2,000 m³/h 60 HzUltimate pressure 33 mbarRated motor power 45 kW 50 Hz75 kW 60 HzVariants 8
AWS 2500Pumping speed 2,450 m³/h 50 Hz2,780 m³/h 60 HzUltimate pressure 33 mbarRated motor power 75 kW 50 Hz90 kW 60 HzVariants 8
AWS 3300Pumping speed 3,200 m³/h 50 Hz3,840 m³/h 60 HzUltimate pressure 33 mbarRated motor power 75 kW 50 Hz110 kW 60 HzVariants 8
AWS 3800Pumping speed 3,750 m³/h 50 Hz4,520 m³/h 60 HzUltimate pressure 33 mbarRated motor power 90 kW 50 Hz132 kW 60 HzVariants 8
AWS 5500Pumping speed 5,300 m³/h 50 Hz5,850 m³/h 60 HzUltimate pressure 33 mbarRated motor power 160 kW 50 Hz185 kW 60 HzVariants 8
AWS 6500Pumping speed 6,510 m³/h 50 HzUltimate pressure 33 mbarRated motor power 169 kW 50 HzVariants 8
AWS 8000Pumping speed 8,100 m³/h 50 HzUltimate pressure 33 mbarRated motor power 200 kW 50 HzVariants 8
AWS 10000Pumping speed 9,450 m³/h 50 HzUltimate pressure 160 mbarRated motor power 235 kW 50 HzVariants 8
AWS 12000Pumping speed 11,652 m³/h 50 HzUltimate pressure 33 mbarRated motor power 305 kW 50 HzVariants 8
AWS 12500Pumping speed 11,820 m³/h 50 HzUltimate pressure 160 mbarRated motor power 253 kW 50 HzVariants 8
AWS 16000Pumping speed 16,380 m³/h 50 HzUltimate pressure 33 mbarRated motor power 420 kW 50 HzVariants 8
AWS 19000Pumping speed 18,250 m³/h 50 HzUltimate pressure 160 mbarRated motor power 430 kW 50 HzVariants 8
AWS 23000Pumping speed 22,800 m³/h 50 HzUltimate pressure 33 mbarRated motor power 555 kW 50 HzVariants
AWS 26000Pumping speed 26,000 m³/h 50 HzUltimate pressure 160 mbarRated motor power 590 kW 50 HzVariants

Busch COBRA Industry series 36 models

COBRA NS 0070 CPumping speed 70 m³/h 50 Hz85 m³/h 60 HzUltimate pressure 0.03 mbarRated motor power 4 kW 50 Hz4.4 kW 60 HzVariants
COBRA NC 0100 BPumping speed 110 m³/h 50 Hz130 m³/h 60 HzUltimate pressure 0.05 mbarRated motor power 3.5 kW 50 Hz4.8 kW 60 HzVariants 4
COBRA NC 0100 B ECOTORQUEPumping speed 130 m³/h 50 Hz130 m³/h 60 HzUltimate pressure 0.05 mbarRated motor power 4.8 kW 50 Hz4.8 kW 60 HzVariants
COBRA NS 0160 CPumping speed 135 m³/h 50 Hz170 m³/h 60 HzUltimate pressure 0.03 mbarRated motor power 5.5 kW 50 Hz6.6 kW 60 HzVariants
COBRA NC 0200 BPumping speed 220 m³/h 50 Hz265 m³/h 60 HzUltimate pressure 0.05 mbarRated motor power 6 kW 50 Hz7.6 kW 60 HzVariants 4
COBRA NC 0200 B ECOTORQUEPumping speed 265 m³/h 50 Hz265 m³/h 60 HzUltimate pressure 0.05 mbarRated motor power 7.6 kW 50 Hz7.6 kW 60 HzVariants
COBRA NC 0300 BPumping speed 320 m³/h 50 Hz385 m³/h 60 HzUltimate pressure 0.05 mbarRated motor power 7.5 kW 50 Hz9.5 kW 60 HzVariants 4
COBRA NC 0400 BPumping speed 350 m³/h 50 Hz420 m³/h 60 HzUltimate pressure 0.05 mbarRated motor power 7.5 kW 50 Hz9.5 kW 60 HzVariants
COBRA NX 0450 APumping speed 350 m³/h 50 Hz420 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power 7.5 kW 50 Hz9.5 kW 60 HzVariants
COBRA NC 0300 B ECOTORQUEPumping speed 385 m³/h 50 Hz385 m³/h 60 HzUltimate pressure 0.05 mbarRated motor power 9.5 kW 50 Hz9.5 kW 60 HzVariants
COBRA NC 0400 B ECOTORQUEPumping speed 420 m³/h 50 Hz420 m³/h 60 HzUltimate pressure 0.05 mbarRated motor power 9.5 kW 50 Hz9.5 kW 60 HzVariants
COBRA NX 0450 A ECOTORQUEPumping speed 420 m³/h 50 Hz420 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power 11 kW 50 Hz11 kW 60 HzVariants
COBRA NC 0500 BPumping speed 490 m³/h 50 Hz490 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 9 kW 50 Hz9 kW 60 HzVariants
COBRA NC 0630 C VRPumping speed 580 m³/h 50 Hz680 m³/h 60 HzUltimate pressure 25 mbarRated motor power 22 kW 50 Hz22 kW 60 HzVariants
COBRA NC 0600 CPumping speed 600 m³/h 50 Hz600 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants
COBRA NS 0600 CPumping speed 600 m³/h 50 Hz600 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 15 kW 50 Hz15 kW 60 HzVariants
COBRA NC 0630 CPumping speed 630 m³/h 50 Hz630 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 15 kW 50 Hz17 kW 60 HzVariants
COBRA NC 0630 C ECOTORQUEPumping speed 630 m³/h 50 Hz630 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 17 kW 50 Hz17 kW 60 HzVariants
COBRA DX 0650 A PLUSPumping speed 650 m³/h 50 Hz650 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power 15 kW 50 Hz15 kW 60 HzVariants
COBRA NX 0650 APumping speed 650 m³/h 50 Hz650 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power 12.5 kW 50 Hz15 kW 60 HzVariants
COBRA NX 0650 A ECOTORQUEPumping speed 650 m³/h 50 Hz650 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power 15 kW 50 Hz15 kW 60 HzVariants
COBRA NF 0750 APumping speed 750 m³/h 50 Hz750 m³/h 60 HzUltimate pressure 0.05 mbarRated motor power 15 kW 50 Hz15 kW 60 HzVariants
COBRA NC 1000 BPumping speed 840 m³/h 50 Hz1,000 m³/h 60 HzUltimate pressure 0.05 mbarRated motor power 22 kW 50 Hz25 kW 60 HzVariants
COBRA DX 0950 A PLUSPumping speed 950 m³/h 50 Hz950 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants
COBRA NF 0950 APumping speed 950 m³/h 50 Hz950 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants
COBRA NX 0950 A ECOTORQUEPumping speed 950 m³/h 50 Hz950 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants
COBRA NC 1500 B VRPumping speed 1,160 m³/h 50 Hz1,400 m³/h 60 HzUltimate pressure 20 mbarRated motor power 30 kW 50 Hz36 kW 60 HzVariants
COBRA DX 2000 A PLUSPumping speed 1,900 m³/h 50 Hz1,900 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 37 kW 50 Hz37 kW 60 HzVariants
COBRA NC 2500 CPumping speed 2,000 m³/h 50 Hz2,500 m³/h 60 HzUltimate pressure 1 mbarRated motor power 55 kW 50 Hz63 kW 60 HzVariants
COBRA NC 2000 C VRPumping speed 2,100 m³/h 50 Hz2,600 m³/h 60 HzUltimate pressure 20 mbarRated motor power 55 kW 50 Hz63 kW 60 HzVariants
COBRA DH 2760 APumping speed 2,112 m³/h 50 Hz2,112 m³/h 60 HzUltimate pressure 1 × 10-3 mbarRated motor power 22.5 kW 50 Hz22.5 kW 60 HzVariants
COBRA DH 2780 APumping speed 2,250 m³/h 50 Hz2,250 m³/h 60 HzUltimate pressure 1 × 10-3 mbarRated motor power 26 kW 50 Hz26 kW 60 HzVariants
COBRA DH 4560 APumping speed 3,077 m³/h 50 Hz3,077 m³/h 60 HzUltimate pressure 1 × 10-3 mbarRated motor power 22.5 kW 50 Hz22.5 kW 60 HzVariants
COBRA DH 4580 APumping speed 3,512 m³/h 50 Hz3,512 m³/h 60 HzUltimate pressure 1 × 10-3 mbarRated motor power 26 kW 50 Hz26 kW 60 HzVariants
COBRA DH 6260 APumping speed 3,781 m³/h 50 Hz3,781 m³/h 60 HzUltimate pressure 1 × 10-3 mbarRated motor power 22.5 kW 50 Hz22.5 kW 60 HzVariants
COBRA DH 6280 APumping speed 4,652 m³/h 50 Hz4,652 m³/h 60 HzUltimate pressure 1 × 10-3 mbarRated motor power 26 kW 50 Hz26 kW 60 HzVariants

Busch DOLPHIN series 70 models

DOLPHIN LX 0030 BPumping speed 25 m³/h 50 Hz31 m³/h 60 HzUltimate pressure 33 mbarRated motor power 1.1 kW 50 Hz1.5 kW 60 HzVariants
DOLPHIN LX 0055 BPumping speed 45 m³/h 50 Hz56 m³/h 60 HzUltimate pressure 33 mbarRated motor power 1.5 kW 50 Hz2.2 kW 60 HzVariants 1
DOLPHIN LA 0053 APumping speed 50 m³/h 50 Hz60 m³/h 60 HzUltimate pressure 130 mbarRated motor power 1.5 kW 50 Hz2.2 kW 60 HzVariants
DOLPHIN LB 0063 APumping speed 60 m³/h 50 Hz65 m³/h 60 HzUltimate pressure 33 mbarRated motor power 3 kW 50 Hz4 kW 60 HzVariants
DOLPHIN LX 0110 CPumping speed 72 m³/h 50 Hz83 m³/h 60 HzUltimate pressure 33 mbarRated motor power 2.2 kW 50 Hz3 kW 60 HzVariants
DOLPHIN LM 0100 APumping speed 82 m³/h 50 Hz97 m³/h 60 HzUltimate pressure 130 mbarRated motor power 2.2 kW 50 Hz3 kW 60 HzVariants
DOLPHIN LA 0103 APumping speed 100 m³/h 50 Hz135 m³/h 60 HzUltimate pressure 130 mbarRated motor power 4 kW 50 Hz4 kW 60 HzVariants
DOLPHIN LX 0140 CPumping speed 100 m³/h 50 Hz120 m³/h 60 HzUltimate pressure 33 mbarRated motor power 3 kW 50 Hz4 kW 60 HzVariants
DOLPHIN LT 0130 APumping speed 105 m³/h 50 Hz128 m³/h 60 HzUltimate pressure 33 mbarRated motor power 3 kW 50 Hz4 kW 60 HzVariants
DOLPHIN LB 0113 APumping speed 110 m³/h 50 Hz120 m³/h 60 HzUltimate pressure 33 mbarRated motor power 4 kW 50 Hz4 kW 60 HzVariants
DOLPHIN LX 0180 CPumping speed 122 m³/h 50 Hz144 m³/h 60 HzUltimate pressure 33 mbarRated motor power 4 kW 50 Hz5.5 kW 60 HzVariants
DOLPHIN LA 0143 APumping speed 140 m³/h 50 Hz190 m³/h 60 HzUltimate pressure 130 mbarRated motor power 4 kW 50 Hz5.5 kW 60 HzVariants
DOLPHIN LB 0144 APumping speed 140 m³/h 50 Hz180 m³/h 60 HzUltimate pressure 33 mbarRated motor power 4 kW 50 Hz5.5 kW 60 HzVariants
DOLPHIN LM 0180 APumping speed 144 m³/h 50 Hz180 m³/h 60 HzUltimate pressure 130 mbarRated motor power 4 kW 50 Hz5.5 kW 60 HzVariants
DOLPHIN LT 0170 APumping speed 144 m³/h 50 Hz162 m³/h 60 HzUltimate pressure 33 mbarRated motor power 4 kW 50 Hz5.5 kW 60 HzVariants
DOLPHIN LB 0184 APumping speed 180 m³/h 50 Hz225 m³/h 60 HzUltimate pressure 33 mbarRated motor power 5.5 kW 50 Hz7.5 kW 60 HzVariants
DOLPHIN LX 0260 CPumping speed 200 m³/h 50 Hz239 m³/h 60 HzUltimate pressure 33 mbarRated motor power 5.5 kW 50 Hz7.5 kW 60 HzVariants
DOLPHIN LT 0220 APumping speed 203 m³/h 50 Hz230 m³/h 60 HzUltimate pressure 33 mbarRated motor power 5.5 kW 50 Hz7.5 kW 60 HzVariants
DOLPHIN LA 0224 APumping speed 220 m³/h 50 Hz270 m³/h 60 HzUltimate pressure 130 mbarRated motor power 5.5 kW 50 Hz7.5 kW 60 HzVariants
DOLPHIN LM 0270 APumping speed 220 m³/h 50 Hz267 m³/h 60 HzUltimate pressure 130 mbarRated motor power 5.5 kW 50 Hz7.5 kW 60 HzVariants
DOLPHIN LT 0320 APumping speed 255 m³/h 50 Hz320 m³/h 60 HzUltimate pressure 33 mbarRated motor power 7.5 kW 50 Hz11 kW 60 HzVariants
DOLPHIN LB 0265 APumping speed 260 m³/h 50 Hz325 m³/h 60 HzUltimate pressure 33 mbarRated motor power 9.2 kW 50 Hz11 kW 60 HzVariants
DOLPHIN LX 0330 CPumping speed 280 m³/h 50 Hz330 m³/h 60 HzUltimate pressure 33 mbarRated motor power 7.5 kW 50 Hz11 kW 60 HzVariants
DOLPHIN LA 0325 APumping speed 320 m³/h 50 Hz350 m³/h 60 HzUltimate pressure 150 mbarRated motor power 11 kW 50 Hz15 kW 60 HzVariants
DOLPHIN LT 0430 APumping speed 340 m³/h 50 Hz419 m³/h 60 HzUltimate pressure 33 mbarRated motor power 11 kW 50 Hz15 kW 60 HzVariants
DOLPHIN LB 0355 APumping speed 350 m³/h 50 Hz400 m³/h 60 HzUltimate pressure 33 mbarRated motor power 11 kW 50 Hz15 kW 60 HzVariants
DOLPHIN LX 0430 CPumping speed 375 m³/h 50 Hz455 m³/h 60 HzUltimate pressure 33 mbarRated motor power 11 kW 50 Hz15 kW 60 HzVariants
DOLPHIN LM 0530 APumping speed 405 m³/h 50 Hz551 m³/h 60 HzUltimate pressure 130 mbarRated motor power 11 kW 50 Hz15 kW 60 HzVariants
DOLPHIN LB 0425 APumping speed 420 m³/h 50 Hz500 m³/h 60 HzUltimate pressure 33 mbarRated motor power 15 kW 50 Hz15 kW 60 HzVariants
DOLPHIN LA 0435 APumping speed 430 m³/h 50 Hz500 m³/h 60 HzUltimate pressure 150 mbarRated motor power 11 kW 50 Hz15 kW 60 HzVariants
DOLPHIN LT 0510 APumping speed 430 m³/h 50 Hz515 m³/h 60 HzUltimate pressure 33 mbarRated motor power 11 kW 50 Hz15 kW 60 HzVariants
DOLPHIN LA 0475 APumping speed 470 m³/h 50 Hz570 m³/h 60 HzUltimate pressure 130 mbarRated motor power 18.5 kW 50 Hz22 kW 60 HzVariants
DOLPHIN LT 0630 APumping speed 498 m³/h 50 Hz574 m³/h 60 HzUltimate pressure 33 mbarRated motor power 15 kW 50 Hz22 kW 60 HzVariants
DOLPHIN LB 0526 APumping speed 520 m³/h 50 Hz580 m³/h 60 HzUltimate pressure 33 mbarRated motor power 18.5 kW 50 Hz22 kW 60 HzVariants
DOLPHIN LT 0750 APumping speed 600 m³/h 50 Hz710 m³/h 60 HzUltimate pressure 33 mbarRated motor power 18.5 kW 50 Hz30 kW 60 HzVariants
DOLPHIN LB 0726 APumping speed 720 m³/h 50 Hz770 m³/h 60 HzUltimate pressure 33 mbarRated motor power 22 kW 50 Hz30 kW 60 HzVariants
DOLPHIN LM 0800 APumping speed 722 m³/h 50 Hz867 m³/h 60 HzUltimate pressure 130 mbarRated motor power 18.5 kW 50 Hz22 kW 60 HzVariants
DOLPHIN LA 0756 APumping speed 750 m³/h 50 Hz840 m³/h 60 HzUltimate pressure 130 mbarRated motor power 22 kW 50 Hz30 kW 60 HzVariants
DOLPHIN LB 0857 APumping speed 850 m³/h 50 Hz1,000 m³/h 60 HzUltimate pressure 33 mbarRated motor power 30 kW 50 Hz37 kW 60 HzVariants
DOLPHIN LA 0906 APumping speed 900 m³/h 50 Hz1,100 m³/h 60 HzUltimate pressure 130 mbarRated motor power 30 kW 50 Hz37 kW 60 HzVariants
DOLPHIN LR 0110 APumping speed 960 m³/h 50 Hz960 m³/h 60 HzUltimate pressure 33 mbarRated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants
DOLPHIN LA 1157 APumping speed 1,150 m³/h 50 Hz1,380 m³/h 60 HzUltimate pressure 130 mbarRated motor power 30 kW 50 Hz45 kW 60 HzVariants
DOLPHIN LB 1207 APumping speed 1,200 m³/h 50 Hz1,380 m³/h 60 HzUltimate pressure 33 mbarRated motor power 37 kW 50 Hz55 kW 60 HzVariants
DOLPHIN LR 0140 APumping speed 1,430 m³/h 50 Hz1,430 m³/h 60 HzUltimate pressure 33 mbarRated motor power 30 kW 50 Hz30 kW 60 HzVariants
DOLPHIN LA 1507 APumping speed 1,500 m³/h 50 Hz1,800 m³/h 60 HzUltimate pressure 130 mbarRated motor power 45 kW 50 Hz55 kW 60 HzVariants
DOLPHIN LB 1507 APumping speed 1,500 m³/h 50 Hz1,690 m³/h 60 HzUltimate pressure 33 mbarRated motor power 45 kW 50 Hz75 kW 60 HzVariants
DOLPHIN LB 1757 APumping speed 1,750 m³/h 50 Hz2,000 m³/h 60 HzUltimate pressure 33 mbarRated motor power 75 kW 50 Hz90 kW 60 HzVariants
DOLPHIN LA 1807 APumping speed 1,800 m³/h 50 Hz2,050 m³/h 60 HzUltimate pressure 130 mbarRated motor power 50 kW 50 Hz75 kW 60 HzVariants
DOLPHIN LA 1908 APumping speed 1,900 m³/h 50 Hz2,250 m³/h 60 HzUltimate pressure 130 mbarRated motor power 75 kW 50 Hz90 kW 60 HzVariants
DOLPHIN LB 2108 APumping speed 2,100 m³/h 50 Hz2,300 m³/h 60 HzUltimate pressure 33 mbarRated motor power 55 kW 50 Hz90 kW 60 HzVariants
DOLPHIN LR 0210 APumping speed 2,100 m³/h 50 Hz2,100 m³/h 60 HzUltimate pressure 33 mbarRated motor power 30 kW 50 Hz30 kW 60 HzVariants
DOLPHIN LA 2408 APumping speed 2,400 m³/h 50 Hz2,600 m³/h 60 HzUltimate pressure 130 mbarRated motor power 75 kW 50 Hz110 kW 60 HzVariants
DOLPHIN LB 2508 APumping speed 2,500 m³/h 50 Hz3,080 m³/h 60 HzUltimate pressure 33 mbarRated motor power 75 kW 50 Hz110 kW 60 HzVariants
DOLPHIN LA 2808 APumping speed 2,800 m³/h 50 Hz3,150 m³/h 60 HzUltimate pressure 130 mbarRated motor power 90 kW 50 Hz150 kW 60 HzVariants
DOLPHIN LB 3008 APumping speed 3,000 m³/h 50 Hz3,200 m³/h 60 HzUltimate pressure 33 mbarRated motor power 90 kW 50 Hz150 kW 60 HzVariants
DOLPHIN LR 0300 APumping speed 3,010 m³/h 50 Hz3,010 m³/h 60 HzUltimate pressure 33 mbarRated motor power 45 kW 50 Hz45 kW 60 HzVariants
DOLPHIN LA 3809 APumping speed 3,600 m³/h 50 Hz3,800 m³/h 60 HzUltimate pressure 130 mbarRated motor power 75 kW 50 Hz90 kW 60 HzVariants
DOLPHIN LB 3809 APumping speed 3,800 m³/h 50 Hz3,800 m³/h 60 HzUltimate pressure 33 mbarRated motor power 90 kW 50 Hz90 kW 60 HzVariants
DOLPHIN LR 0420 APumping speed 3,830 m³/h 50 Hz3,830 m³/h 60 HzUltimate pressure 33 mbarRated motor power 55 kW 50 Hz55 kW 60 HzVariants
DOLPHIN LB 4409 APumping speed 4,400 m³/h 50 Hz4,400 m³/h 60 HzUltimate pressure 33 mbarRated motor power 90 kW 50 Hz90 kW 60 HzVariants
DOLPHIN LA 5109 APumping speed 4,700 m³/h 50 Hz5,100 m³/h 60 HzUltimate pressure 130 mbarRated motor power 90 kW 50 Hz110 kW 60 HzVariants
DOLPHIN LR 0700 APumping speed 4,920 m³/h 50 Hz7,000 m³/h 60 HzUltimate pressure 33 mbarRated motor power 110 kW 50 Hz110 kW 60 HzVariants
DOLPHIN LR 0580 APumping speed 5,300 m³/h 50 Hz5,300 m³/h 60 HzUltimate pressure 33 mbarRated motor power 75 kW 50 Hz75 kW 60 HzVariants
DOLPHIN LG 0890 APumping speed 6,000 m³/h 50 Hz8,900 m³/h 60 HzUltimate pressure 160 mbarRated motor power 132 kW 50 Hz132 kW 60 HzVariants
DOLPHIN LR 1190 APumping speed 6,700 m³/h 50 Hz11,900 m³/h 60 HzUltimate pressure 33 mbarRated motor power 160 kW 50 Hz160 kW 60 HzVariants
DOLPHIN LG 1200 APumping speed 7,650 m³/h 50 Hz12,000 m³/h 60 HzUltimate pressure 160 mbarRated motor power 160 kW 50 Hz160 kW 60 HzVariants
DOLPHIN LR 1560 APumping speed 9,500 m³/h 50 Hz15,600 m³/h 60 HzUltimate pressure 33 mbarRated motor power 220 kW 50 Hz220 kW 60 HzVariants
DOLPHIN LG 1910 APumping speed 11,550 m³/h 50 Hz19,100 m³/h 60 HzUltimate pressure 160 mbarRated motor power 220 kW 50 Hz220 kW 60 HzVariants
DOLPHIN LR 2200 APumping speed 14,100 m³/h 50 Hz22,000 m³/h 60 HzUltimate pressure 33 mbarRated motor power 315 kW 50 Hz315 kW 60 HzVariants
DOLPHIN LG 2680 APumping speed 16,160 m³/h 50 Hz26,800 m³/h 60 HzUltimate pressure 160 mbarRated motor power 315 kW 50 Hz315 kW 60 HzVariants

Edwards LR1A series 12 models

Edwards LR1A700Pumping speed 601.2 m³/h 50 Hz698.4 m³/h 60 HzUltimate pressure 33 mbarRated motor power 18.5 kW 50 Hz30 kW 60 HzVariants 3
Edwards LR1A800Pumping speed 748.8 m³/h 50 Hz889.2 m³/h 60 HzUltimate pressure 33 mbarRated motor power 22 kW 50 Hz30 kW 60 HzVariants 3
Edwards LR1A1200Pumping speed 1,080 m³/h 50 Hz1,321.2 m³/h 60 HzUltimate pressure 33 mbarRated motor power 37 kW 50 Hz45 kW 60 HzVariants 3
Edwards LR1A1300Pumping speed 1,231.2 m³/h 50 Hz1,450.8 m³/h 60 HzUltimate pressure 33 mbarRated motor power 37 kW 50 Hz55 kW 60 HzVariants 3
Edwards LR1A1600Pumping speed 1,699.2 m³/h 50 Hz2,001.6 m³/h 60 HzUltimate pressure 33 mbarRated motor power 45 kW 50 Hz75 kW 60 HzVariants 3
Edwards LR1A2500Pumping speed 2,451.6 m³/h 50 Hz2,779.2 m³/h 60 HzUltimate pressure 33 mbarRated motor power 75 kW 50 Hz90 kW 60 HzVariants 3
Edwards LR1A4000Pumping speed 3,996 m³/h 50 Hz3,996 m³/h 60 HzUltimate pressure 33 mbarRated motor power 110 kW 50 Hz110 kW 60 HzVariants 3
Edwards LR1A5000Pumping speed 4,536 m³/h 50 Hz4,536 m³/h 60 HzUltimate pressure 33 mbarRated motor power 132 kW 50 Hz132 kW 60 HzVariants 3
Edwards LR1A5500Pumping speed 5,292 m³/h 50 Hz5,292 m³/h 60 HzUltimate pressure 33 mbarRated motor power 160 kW 50 Hz160 kW 60 HzVariants 3
Edwards LR1A6500Pumping speed 6,012 m³/h 50 Hz6,012 m³/h 60 HzUltimate pressure 33 mbarRated motor power 160 kW 50 Hz160 kW 60 HzVariants 3
Edwards LR1A8000Pumping speed 8,100 m³/h 50 Hz8,100 m³/h 60 HzUltimate pressure 33 mbarRated motor power 250 kW 50 Hz250 kW 60 HzVariants 3
Edwards LR1A500Pumping speed Ultimate pressure 33 mbarRated motor power 15 kW 50 Hz22 kW 60 HzVariants 2

Edwards LR1C series 9 models

Edwards LR1C030Pumping speed 27 m³/h 50 Hz31 m³/h 60 HzUltimate pressure 33 mbarRated motor power 0.81 kW 50 Hz1.27 kW 60 HzVariants 3
Edwards LR1C050Pumping speed 50.4 m³/h 50 Hz61.2 m³/h 60 HzUltimate pressure 33 mbarRated motor power 1.45 kW 50 Hz2.55 kW 60 HzVariants 3
Edwards LR1C080Pumping speed 79.2 m³/h 50 Hz93.6 m³/h 60 HzUltimate pressure 33 mbarRated motor power 2.35 kW 50 Hz3.45 kW 60 HzVariants 3
Edwards LR1C110Pumping speed 111.6 m³/h 50 Hz129.6 m³/h 60 HzUltimate pressure 33 mbarRated motor power 3.85 kW 50 Hz6.3 kW 60 HzVariants 3
Edwards LR1C150Pumping speed 165.6 m³/h 50 Hz194.4 m³/h 60 HzUltimate pressure 33 mbarRated motor power 4 kW 50 Hz5.5 – 6.3 kW 60 HzVariants 6
Edwards LR1C200Pumping speed 230.4 m³/h 50 Hz270 m³/h 60 HzUltimate pressure 33 mbarRated motor power 5.5 kW 50 Hz7.5 – 8.2 kW 60 HzVariants 6
Edwards LR1C300Pumping speed 280.8 m³/h 50 Hz331.2 m³/h 60 HzUltimate pressure 33 mbarRated motor power 7.5 kW 50 Hz11 – 12.9 kW 60 HzVariants 6
Edwards LR1C400Pumping speed 399.6 m³/h 50 Hz471.6 m³/h 60 HzUltimate pressure 33 mbarRated motor power 11 kW 50 Hz18.5 kW 60 HzVariants 6
Edwards LR1C500Pumping speed 500.4 m³/h 50 Hz579.6 m³/h 60 HzUltimate pressure 33 mbarRated motor power 15 kW 50 Hz18.5 kW 60 HzVariants 6

Edwards LR1D series 12 models

Edwards LR1D0035Pumping speed 20 m³/h 50 Hz28.8 m³/h 60 HzUltimate pressure 30 mbarRated motor power 0.9 kW 50 Hz1.12 kW 60 HzVariants 4
Edwards LR1D0060Pumping speed 42.6 m³/h 50 Hz45.7 m³/h 60 HzUltimate pressure 30 mbarRated motor power 1.94 kW 50 Hz2.24 kW 60 HzVariants 4
Edwards LR1D0100Pumping speed 69.5 m³/h 50 Hz90.1 m³/h 60 HzUltimate pressure 30 mbarRated motor power 2.8 kW 50 Hz4.1 kW 60 HzVariants 4
Edwards LR1D0135Pumping speed 101.1 m³/h 50 Hz130.5 m³/h 60 HzUltimate pressure 30 mbarRated motor power 3.06 kW 50 Hz4.1 kW 60 HzVariants 4
Edwards LR1D0170Pumping speed 117.7 m³/h 50 Hz148.2 m³/h 60 HzUltimate pressure 30 mbarRated motor power 3.8 kW 50 Hz4.1 kW 60 HzVariants 4
Edwards LR1D0260Pumping speed 168.5 m³/h 50 Hz208 m³/h 60 HzUltimate pressure 30 mbarRated motor power 5.78 kW 50 Hz7.46 kW 60 HzVariants 4
Edwards LR1D0340Pumping speed 252.7 m³/h 50 Hz301.6 m³/h 60 HzUltimate pressure 30 mbarRated motor power 7.8 kW 50 Hz11.19 kW 60 HzVariants 2
Edwards LR1D0510Pumping speed 336 m³/h 50 Hz393.2 m³/h 60 HzUltimate pressure 30 mbarRated motor power 10.82 kW 50 Hz14.92 kW 60 HzVariants 2
Edwards LR1D0770Pumping speed 476.7 m³/h 50 Hz578.7 m³/h 60 HzUltimate pressure 30 mbarRated motor power 14.92 kW 50 Hz18.65 kW 60 HzVariants 3
Edwards LR1D0940Pumping speed 729.6 m³/h 50 Hz880.5 m³/h 60 HzUltimate pressure 30 mbarRated motor power 23.13 kW 50 Hz29.84 kW 60 HzVariants 3
Edwards LR1D1280Pumping speed 951.5 m³/h 50 Hz1,193.4 m³/h 60 HzUltimate pressure 30 mbarRated motor power 28.35 kW 50 Hz41.03 kW 60 HzVariants 3
Edwards LR1D2040Pumping speed 1,340 m³/h 50 Hz1,644.1 m³/h 60 HzUltimate pressure 30 mbarRated motor power 42.15 kW 50 Hz60.43 kW 60 HzVariants 3

Model comparison

Models a manufacturer no longer carries in its current range are listed in its “Outdated models” section.

Industries

Seawater deaeration: where the manufacturers name it

The manufacturers list these uses on their own pages.

Oil and gas

Busch names seawater degassing and deaeration for flood water with DOLPHIN and COBRA, Edwards the removal of oxygen from injection water against corrosion with LR1A, LR1C and LR1D.

Industry page: Oil and gas →

Carbon capture (CCUS)

Atlas Copco names AWS and AWD with a booster for the removal of CO₂ from seawater under harsh offshore conditions.

Industry page: Carbon capture (CCUS) →

Frequently asked questions

Seawater deaeration: frequently asked questions

How does seawater deaeration work?

The seawater passes through a column under vacuum and releases its dissolved gases – Busch describes O₂ removal in the deaerator tower, Edwards a stripping column with two or three stages. The water vapour is condensed, and the vacuum pump draws off the gases.

Why must seawater be deaerated before injection?

According to Edwards, the oxygen is removed from the injection water to prevent corrosion. Busch describes the removal of dissolved gases from the flood water, Atlas Copco seawater deaeration for oil field water injection.

Which vacuum pump for seawater deaeration?

Edwards names the liquid ring series LR1A, LR1C and LR1D together with a stripping column and air ejectors. Atlas Copco names AWS and AWD with a booster for offshore conditions, Busch DOLPHIN and COBRA.

How much residual oxygen remains after vacuum deaeration?

Edwards names below 50 ppb with a two-stage and below 20 ppb with a three-stage design of the stripping column.

How much vacuum does seawater deaeration need?

According to Edwards, the design depends on the required residual oxygen: two stages for below 50 ppb, three stages for below 20 ppb.

Liquid ring or dry vacuum pump for seawater?

Edwards and Atlas Copco name liquid ring vacuum pumps: Edwards LR1A, LR1C and LR1D with air ejectors, Atlas Copco AWS and AWD with a booster. Busch names DOLPHIN and, in its product finder, COBRA.

What role do air ejectors play in seawater deaeration?

Edwards describes the system as a combination of stripping column, liquid ring vacuum pump and air ejectors; the ejectors work upstream of the pump. Atlas Copco names boosters upstream of AWS and AWD instead.

Can vacuum be used to remove CO₂ from seawater?

Atlas Copco names seawater degassing in connection with carbon capture (CCUS): CO₂ is removed from the seawater under harsh offshore conditions; AWS and AWD with a booster are named.

A single pump or a central vacuum system?

A central system in a room of its own keeps noise and heat away from production and matches its output to the demand. Central vacuum systems are planned and built by Eugen Theis Vakuum, a company of the Ehrler & Beck group – more under Central Vacuum.

Does Ehrler & Beck also supply spare parts and service?

Yes. Ehrler & Beck offers original spare parts and accessories as well as maintenance and repair.

Which pump suits your process?

Tell us the application, the medium and the volume – we advise you on selection, spare parts and service.

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